CN106762105A - A kind of combined type cooling structure for automobile engine intercooler - Google Patents

A kind of combined type cooling structure for automobile engine intercooler Download PDF

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Publication number
CN106762105A
CN106762105A CN201611194891.4A CN201611194891A CN106762105A CN 106762105 A CN106762105 A CN 106762105A CN 201611194891 A CN201611194891 A CN 201611194891A CN 106762105 A CN106762105 A CN 106762105A
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China
Prior art keywords
fin
louvered fin
substrate
louvered
cooling
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CN201611194891.4A
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Chinese (zh)
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CN106762105B (en
Inventor
黎明
马朝
刘伟琛
邱思槐
李乐
王刚
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0425—Air cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0456—Air cooled heat exchangers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a kind of combined type cooling structure for automobile engine intercooler, cooler cooling air inlet side installs import distribution dividing plate additional within the engine, cooling gas are distributed by import and enter louvered fin structure at dividing plate, and gas flows under the water conservancy diversion of louvered fin structure；As heat conduction and the carrying out of heat convection, hot-gas temperature decline, the temperature difference with cooling gas is tapered into, and completes heat exchange with louvered fin, realizes reducing hot air temperature.In combined type cooling structure, import distribution dividing plate and the louvered fin arranged in the same direction can significantly improve heat exchange efficiency and reduce flow resistance.Louvered fin windowing direction on adjacent inclined substrate is identical, cooling gas is flowed in louvered fin side more uniform.Meanwhile, the angle of dividing plate is distributed by changing import, different cooling gas distribution effects can be obtained.Combined type cooling structure cooling effectiveness is high, and the cold side pressure loss is small, simple structure, it is easy to process.

Description

A kind of combined type cooling structure for automobile engine intercooler
Technical field
The present invention relates to automobile engine intercooler and radiator cooling technology, specifically, it is related to a kind of for improving The combined type cooling structure of engine intercooler heat exchange property.
Background technology
At present, turbocharging technology as it is a kind of can significantly improve engine power, reduce fuel consumption means, Used by engine works and vehicle factory more and more.But air temperature in compression process can be raised, if will pressure High temperature air after contracting is sent directly into engine chamber, is easily caused combustion knock, and engine power can also reduced.Institute Just seem very necessary so that the HTHP air after turbo-compressor to be lowered the temperature by intercooler.Current intercooler for vehicle is more Using flap type plate fin heat-exchanging structure.Heat exchange core body is made up of some basic flow passage units, basic flow passage unit be by Heat exchange fin, shutter and cooling tube composition, several such flow passage units are stacked according to fluid-flow mode Carry out soldering integral, cold fluid and hot fluid are flowed in adjacent basic flow passage unit, and heat exchange is carried out by heat exchange fin. Heat exchange fin is the main heat transfer unit of plate-fin heat exchanger, and in normal design, heat exchange fin heat transfer area is always passed for heat exchanger The 67%~88% of hot area.Therefore the structure snd size of heat exchange fin are the key factors for influenceing heat exchanger performance.Permitted both at home and abroad Many researchs and remodeling are all carried out for this.
A kind of " augmentation of heat transfer blinds for being applied to automobile engine cooling-part is proposed in patent of invention CN101074855A Window fin ".The louver angle of window wing is different in fin in the invention, with the increase of air flow length, every group of window wing it is whole Body louver angle reduces.This structure can to a certain extent reduce flow losses, but from the point of view of application of engineering project, there is it The deficiency of itself；Because every group of wing window spacing is smaller, different wing windows can cause the increase of difficulty of processing using different angles.
Including including above-mentioned patent, the shutter wing of adjacent substrates is used and reversely opened on traditional charge air cooler plate-fin heat exchanger Window.This arrangement can cause the cooling gas of adjacent different passages by flowing to same passage after shutter water conservancy diversion, Increase the loss of cooling air lateral pressure.The too high cold side pressure loss can make cooling gas flow reduction, cause charge air cooler Cooling effect declines.
The content of the invention
In order to improve the heat exchange property of engine intercooler, the cooling structure cooling effectiveness that prior art is present is overcome not Height, the cold side pressure loss is big, the problem of processed complex, the present invention proposes a kind of combined type for automobile engine intercooler Cooling structure.
The technical solution adopted for the present invention to solve the technical problems is:Including Type B flat tube, import distribution dividing plate, blinds Window fin, incline substrate, charge air cooler cooling air inlet side install additional import distribution dividing plate, cooling gas by import distribution every Enter louvered fin structure at plate, gas flow under the water conservancy diversion of louvered fin structure, it is characterised in that import distribute every Plate is fixed between Type B flat tube, and import distribution dividing plate determines angle by cooling air-flow distribution, and its span is 45~60 °；Hundred Leaf window fin is arranged on and inclines on substrate, and every two groups of inclination substrates are arranged on Type B flat tube in splayed, every group of inclination substrate with Angle is identical between Type B flat tube, and is distributed with axial symmetry, and louvered fin cross section is parallelogram, in same inclination substrate Two groups of louvered fins are arranged, is divided into part and lee-ward windward, windward the louvered fin of part and the folder for inclining substrate The louvered fin of angle and lee-ward is identical with the angle for inclining substrate, and windowing is in opposite direction, and on adjacent inclined substrate hundred Leaf window fin windowing direction is identical；Angle span is 26~30 ° between louvered fin and inclination substrate；Incline substrate with Angle span is 72~76 ° between Type B flat tube.
The louvered fin is multigroup, and every group of louvered fin is 7~10.
The level interval of the louvered fin is 1.2~1.5mm.
Beneficial effect
A kind of combined type cooling structure for automobile engine intercooler proposed by the present invention, in charge air cooler cooling air Inlet side installs distribution intake channel additional, makes high-temperature gas along tube side flow, with heat conduction and the carrying out of heat convection, high-temperature gas Temperature drop, the temperature difference with cooling gas is tapered into, so its heat transfer process occurs mainly in tube side first half.The part Primarily serve the effect of cooling air-flow distribution.After installing distribution formula import additional, to cooling air inlet carry out water conservancy diversion, make more air-flows from Tube side first half enters, and enhances the heat convection in high efficient heat exchanging area.Meanwhile, dividing plate angle is distributed by changing air inlet, can Obtain different cooling gas distribution effects.
During the present invention is for the combined type cooling structure of automobile engine intercooler, cooling gas distribute dividing plate by import Place enters louvered fin structure, and gas flows under the water conservancy diversion of louvered fin structure, and completes heat friendship with louvered fin Change, realize reducing the purpose of hot air temperature.In combined type cooling structure, import distribution dividing plate and the in the same direction louvered fin of arrangement Heat exchange efficiency can be significantly improved and flow resistance is reduced.Louvered fin windowing direction on adjacent inclined substrate is identical, makes cold But gas flows more uniform in louvered fin side.
For the combined type cooling structure of automobile engine intercooler, high with cooling effectiveness, cold side pressure is damaged the present invention Lose small, simple structure, it is easy to the characteristics of processing；Understood through CFD simulations, using the charge air cooler cooling effectiveness of combined type cooling structure 3% can be lifted, the cold side pressure loss can reduce 50Pa or so under common operating mode.
Brief description of the drawings
Below in conjunction with the accompanying drawings knot is cooled down with the implementation method combined type for automobile engine intercooler a kind of to the present invention Structure is described in further detail.
Fig. 1 a are combined type cooling structure schematic diagram of the present invention for automobile engine intercooler.
Fig. 1 b are the louvered fin runner sectional view of combined type cooling structure of the present invention.
Fig. 2 is the inclination substrate and louvered fin installation position schematic diagram of combined type cooling structure of the present invention.
Fig. 3 is the louvered fin schematic diagram of combined type cooling structure of the present invention.
In figure:
3. louvered fin of the import of 1.B types flat tube 2. distribution dividing plate 4. inclines substrate
Specific embodiment
The present embodiment is a kind of combined type cooling structure for automobile engine intercooler.
Refering to Fig. 1 a, Fig. 1 b, Fig. 2, Fig. 3, the present embodiment is used for the combined type cooling structure of automobile engine intercooler, by Type B flat tube, import distribution dividing plate, louvered fin, inclination substrate composition, import point is installed additional in charge air cooler cooling air inlet side With dividing plate, cooling gas are distributed by import and enter louvered fin structure at dividing plate, and gas is led louvered fin structure Flow down flowing.Wherein, import distribution dividing plate 2 is fixedly welded between Type B flat tube, and import distributes dividing plate 2 and distributed by cooling air-flow Determine angle, its span is 45~60 °.Louvered fin 3 is arranged on and inclines on substrate 4, and every two groups of inclination substrates 4 are in eight Font is arranged on Type B flat tube, and 1 angle of every group of inclination substrate 4 and Type B flat tube is identical, and is distributed with axial symmetry.Shutter wing The cross section of piece 3 is parallelogram, and two groups of louvered fins are arranged in same inclination substrate 4, is divided into part and leeward portion windward Divide, windward the louvered fin 3 of part and the angle of inclination substrate 4 and the louvered fin 3 of lee-ward and inclination substrate 4 Angle is identical, and windowing is in opposite direction；The windowing of louvered fin 3 direction on adjacent substrates is identical.Louvered fin 3 and inclination base Angle span is 26~30 ° between piece 4；It is 72~76 ° to incline angle span between substrate 4 and Type B flat tube 1.
Embodiment one
Every two groups of inclination substrates 4 are arranged on Type B flat tube 1 in splayed.Louvered fin 3 is arranged on angle, θ and inclined On substrate 4.Its windowing crest is L2, two paired fin plate bottom spacing are L1.Import distribution dividing plate 2 is fixed by soldering In inlet of cold air.Inlet of cold air is divided into two passages by import distribution dividing plate 2, and channel width is respectively S1And S2, so that Obtain different inlet velocities.Cold air enters from import distribution dividing plate, is divided into two passages, the larger part of flow and heat Air upstream correspondence, is cooled down with the convection heat transfer' heat-transfer by convection for strengthening upstream high efficient heat exchanging area.Louvered fin on adjacent inclined substrate 4 is opened Window direction is identical.
Two groups of louvered fins 3 are arranged in same inclination substrate 4, is divided into part and lee-ward windward, windward part Louvered fin 3 is identical with the angle for inclining substrate 4 with the angle of inclination substrate 4 and the louvered fin 3 of lee-ward, windowing In the opposite direction.Two adjacent spacing of louvered fin 3 are σ.It is L to incline the length of substrate 4, is highly S.Hot-air passes through Type B Heat is transmitted to louvered fin 3 by flat tube 1, and cold air flows through between louvered fin 3, takes away the heat on louvered fin 3.
The cross section of louvered fin 3 is parallelogram, and installed in inclining on substrate 4, setting angle is δ, each fin Width is σ2.9 louvered fins 3 of single-sided arrangement.
Embodiment two
In the present embodiment, under same inlet air conditions, combined type cooling structure and common charge air cooler radiator structure are contrasted Performance difference:
In combined type cooling structure, louvered fin 3 elects 27 ° as with the angle for inclining substrate 4, inclines substrate and Type B The angle of flat tube 1 is set to 75 °, and the level interval of neighboring louver fin 3 is 1.35mm, and import distribution dividing plate 2 selectes inclination angle It it is 50 °, the windowing of louvered fin 3 direction on adjacent inclined substrate 4 is identical.In common charge air cooler radiator structure, each size It is identical with combined type cooling structure, but louvered fin windowing on adjacent substrates is in opposite direction, and be not provided with import distribution every Plate.
For common charge air cooler radiator structure, its properties is measured by wind tunnel test methods.Operating condition of test such as following table It is shown:
The operating condition of test of table 1
Charge air cooler performance is generally with cooling effectiveness η and cold side pressure drop △ PcThe two indexs are weighed；Enter by formula (1) OK:
Wherein, ThIt is hot side import air themperature, Th0It is hot side outlet air themperature, T0It is cooling air inlet temperature. Cold side pressure drop characterizes cooling capacity of the cooling gas to tube side hot gas, and its formula is:
ΔPc=Pc1-Pc2 (2)
Wherein, Pc1It is cooling air inlet pressure, Pc2It is cooling air outlet pressure.
Numerical simulation is carried out to combined type cooling structure using CFD.Simulation operating mode is consistent with operating condition of test.Following table is Common plate-fin charge air cooler and combined type cooling structure cooling effectiveness and cold side pressure loss contrast table.As can be seen from the table, The cooling effectiveness of combined type cooling intercooler cooling effectiveness compared with common plate-fin charge air cooler is all improved under different operating modes, can Improve nearly 3%, while its cold side pressure loss all decreases, reduced respectively from operating mode 1 to the pressure loss of operating mode 3 20Pa, 47Pa and 61Pa.Charge air cooler combination property gets a promotion.As can be seen that the distribution formula import in combined type cooling intercooler, with And identical inclination angle louvered fin arrangement can improve charge air cooler cooling effectiveness, increase the quantity of heat convection, while pressure is damaged Mistake is also improved.
2 two kinds of charge air cooler performance comparisons of table

Claims (3)

1. a kind of combined type cooling structure for automobile engine intercooler, including Type B flat tube, import distribution dividing plate, blinds Window fin, incline substrate, charge air cooler cooling air inlet side install additional import distribution dividing plate, cooling gas by import distribution every Enter louvered fin structure at plate, gas flows under the water conservancy diversion of louvered fin structure, it is characterised in that:Import distribution every Plate is fixed between Type B flat tube, and import distribution dividing plate determines angle by cooling air-flow distribution, and its span is 45~60 °；Hundred Leaf window fin is arranged on and inclines on substrate, and every two groups of inclination substrates are arranged on Type B flat tube in splayed, every group of inclination substrate with Angle is identical between Type B flat tube, and is distributed with axial symmetry, and louvered fin cross section is parallelogram, in same inclination substrate Two groups of louvered fins are arranged, is divided into part and lee-ward windward, windward the louvered fin of part and the folder for inclining substrate The louvered fin of angle and lee-ward is identical with the angle for inclining substrate, and windowing is in opposite direction, and on adjacent inclined substrate hundred Leaf window fin windowing direction is identical；Angle span is 26~30 ° between louvered fin and inclination substrate；Incline substrate with Angle span is 72~76 ° between Type B flat tube.
2. the combined type cooling structure for automobile engine intercooler according to claim 1, it is characterised in that:It is described Louvered fin is multigroup, and every group of louvered fin is 7~10.
3. the combined type cooling structure for automobile engine intercooler according to claim 1, it is characterised in that:It is described The level interval of louvered fin is 1.2~1.5mm.
CN201611194891.4A 2016-12-22 2016-12-22 Combined cooling structure for intercooler of automobile engine Active CN106762105B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1431453A (en) * 2003-01-17 2003-07-23 西安交通大学 Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate
CN2591545Y (en) * 2001-09-12 2003-12-10 曹毅文 Adjustable quantity heat exchanger
CN202101594U (en) * 2011-06-02 2012-01-04 江苏宝得换热设备有限公司 Flow equalization heat exchanger
KR20120119053A (en) * 2011-04-20 2012-10-30 (주)대주기계 High - efficiency heat exchanger with a inlet guide plate
CN202928427U (en) * 2012-11-02 2013-05-08 广东美的制冷设备有限公司 Heat exchanger fin, heat exchanger and air conditioner
CN103673695A (en) * 2013-12-25 2014-03-26 山东大学 Plate heat exchanger and method for calculating criterion numeral of plate heat exchanger
CN105547042A (en) * 2015-12-30 2016-05-04 郑州大学 Novel fin heat exchanger of louver

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2591545Y (en) * 2001-09-12 2003-12-10 曹毅文 Adjustable quantity heat exchanger
CN1431453A (en) * 2003-01-17 2003-07-23 西安交通大学 Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate
KR20120119053A (en) * 2011-04-20 2012-10-30 (주)대주기계 High - efficiency heat exchanger with a inlet guide plate
CN202101594U (en) * 2011-06-02 2012-01-04 江苏宝得换热设备有限公司 Flow equalization heat exchanger
CN202928427U (en) * 2012-11-02 2013-05-08 广东美的制冷设备有限公司 Heat exchanger fin, heat exchanger and air conditioner
CN103673695A (en) * 2013-12-25 2014-03-26 山东大学 Plate heat exchanger and method for calculating criterion numeral of plate heat exchanger
CN105547042A (en) * 2015-12-30 2016-05-04 郑州大学 Novel fin heat exchanger of louver

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